[turbofan] Remove obsolete unique.h includes in TurboFan.

test/unittests/compiler/simplified-operator-reducer-unittest.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/simplified-operator.h"
 #include "src/compiler/simplified-operator-reducer.h"
-#include "src/conversions.h"
+#include "src/conversions-inl.h"
 #include "src/types.h"
 #include "test/unittests/compiler/graph-unittest.h"
 #include "test/unittests/compiler/node-test-utils.h"
 #include "testing/gmock-support.h"
 
 using testing::BitEq;
 
 
 namespace v8 {
 namespace internal {
@@ skipping 375 matching lines @@
         Reduce(graph()->NewNode(simplified()->ChangeUint32ToTagged(),
                                 Int32Constant(bit_cast<int32_t>(n))));
     ASSERT_TRUE(reduction.Changed());
     EXPECT_THAT(reduction.replacement(), IsNumberConstant(BitEq(FastUI2D(n))));
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8